| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 23 |
8.5%
|
| 2 | Every few weeks | 37 |
13.7%
|
| 3 | Every few months | 102 |
37.6%
|
| 4 | Not at all | 109 |
40.2%
|
| Sysmiss | 48 |